Originally Posted by S65NAPWR
KW Sleeve Kit is pretty common and does its job well, very little if any complaints on the forum. A Ground Control kit is bit more costly but comes with camber plates, I've heard mixed reviews on quality and customer service.
Note, a sleeve kit is not going to be any easier on your stock struts than springs. Benefits are you can corner balance. I also don't like the fact springs rake the car forward which is not natural for the suspension.
If you are now thinking springs, you could get Eibachs (like stock firmness) or H&R Sport (firm), but lowered with E36 bump stops. Another option could be DINAN springs that guarantee to not damage your struts, but your car won't be as low (similar to ZCP), but as you know it's a proven and reliable set-up with true performance benefits.
So many suspension choices and so little time...in my experience I was not happy with springs or a sleeve kit and eventually had to get coils.
Tough choice I think. Just not sure what way to go if any. Thanks for your inputs on this.